Franciscana dolphin 3 Argentina 2 Atlantic Ocean 2 Atlantic Ocean (South) 2 Atlantic Ocean (Southwest) 2 Buenos Aires [Argentina] 2 Cetacea 2 Cynoscion guatucupa 2 Pontoporia blainvillei 2 Southwestern South Atlantic Ocean 2 Trophic habits 2 age class 2 carbon isotope 2 dolphin 2 endangered species 2 endemic species 2 estimation method 2 food consumption 2 home range 2 intraspecific variation 2 isotopic analysis 2 nitrogen isotope 2 perciform 2 stable isotope 2 stomach content 2 trophic conditions 2 δ13C 2 δ15N 2 ADN mitocondrial 1 Ciencias Veterinarias 1